Liquid level gauge



2 Sheets-Sheet 1 Aug. 23, 1949. H. D. YODER LIQUID LEVEL GAUGE FiledNov. 19, 1945 ATTORN EYS FIG.2.

INVENTOR E E E A 25 Q E L: T,

r5: 2: 2 i: G Iv I IIIIII HOWARD D.YODER 3: I; a: v =1: E

Aug. 23, 1949. H. D. YODER LIQUID LEVEL GAUGE 2 Sheets-Sheet 2 FiledNov. 19, 1945 'K'Nl FIGA.

INVENTOR.

HOWARD D. YODER BY Mm /Wk/5M ATTORNEYS has pointed out weakiie I I h Ithas been found that, the overhangingsides Patented Aug. 23 1949 IPA-TENToc 2,480,070 mom LEVEL GAUGE Howard D. Yoder, Detroit, Mich, assignortofenherthylnjector Company. Detroit, Mich fa cor oration of Delawaredpplicatign lflove nber 19, 1945,; Serial No. 629,516

1 h n n ion relates l u leve g u e to indicating the'l'ev'elo'fjaliquidin'aboileror other fluid container.

Extensive manufact rin .ex er enc in h art 1 and. imp vem ts .of the gass covenfipr trams) wheneverthe bolts are. tightenedare brougtunderheavy stress and the outer edges of the iace tend to bend overunder thepull and 'thi'aceftiridth dimension length position.

These effects, if carriedianenoug m cause breakage of the glass.

To protect theglass ,i 'om fiimilarbending l shows a tendency to spreadparticularly .at'

stresses the se or ub tant al and iieavrmet i e ion re u re To reduceweight while maintaining strength is an object of this invention.

To reduce machine shop labor by utilizing the smooth cold drawn suriacesis; another object.

Another object'is the 'use'ciflol'd drawn steel in an effort to securematerial ofhigherstrength inherent to its cold working.

To reduce. eccentricloadin-s, bendingand deforrolled steelifsha-pes.

Another object is the thorough dispersal of stress concentrations byinterposing the deep sides between bolts and glass.

In the drawings is shown a practical embodiment of the claims, althoughthere is no intention of limitation to this precise form.

Fig. l is a front perspective elevation of the gauge;

Fig. 2 is a side elevation partly in vertical central section of theimproved gauge;

Fig. 3 is a horizontal cross section therethrough;

Fig. is a rear elevation of a portion of the gauge;

Fig. 5 is a perspective view of the several main members from which thegauge is formed detached from each other;

Fig. 6 is a section on line 6-6, Fig. 2, illustrating the means forsecuring the clamping screws;

Fig. '7 is a diagrammatic cross section showing 3 Claims. (01. 73-330) 2io a on th ht a U'-.be1t..securingme ns. The main elements of myimprovedgall e. are formed from cold rolled bar stock and are'fash-.ioned with the minimum amountmoi machining operations. Thus, the memberA, containing. the liquid column is preferably iormedaofa cOldli'olledbar. This bar is threadedat both ends fon coib nection tailpipes and hasa formed liquid chamber between the ends which is open at the front, andcovered by the sight glass in, the, usualfmanner. To hold the glass D inplace and to formfa liquidtight seal, I employ the followinconstruction. E. isa flat bar of. cold rolled stockflwhic'h constitutesthe face of the gauge and whichhasstamped or otherwise formed thereinalongitudinally, er;- tending central slot E. .FandFfiare. flat bars .ofcold. rolled stock and, of. a lighterfgauge than thebar E which arespaced iromf eaflh,,other {a distance equal to the width of themember ,Aand .20

as b w n h side barsiF and .F' have are secured to the bar E by'suitable'means, such punched therein adjacent to the outer ..edgesthereof a series of apertures G' and have also adjacent to their inneredgesand near the opposite ends thereof the punchedapertures I -L"T.he

member A has arranged on the side thereof oppo- "site the channel. aseries ofstamnin'gs. I Whichlare secured to the member .bysuitablemeans, such ,as by spot welding. Each ofjthq e. stampingsj'I .30.

providesa swivel connection to theend ofascrew Jwhichlatter threadedlyengages across .bar. K adapted for insertion through the alignedapertures, G in the sidesF andF'. The swiveledjen- 'gagement is. formedby cutting a groove J inthe screw J and by formingthe 'm'emberl withQaraised flange I having ajnentrance slot Ittherein of sufiicient width'toreceive the groove portion of the screw. A pin I is then inserted tohold the screw from detachment while permitting free rotation thereof.Thus, all of the screws J together with the cross bars K engagedtherewith are secured to the member A but are free to be independentlyoperated. To facilitate such operation the bar K has arcuate endportions K. The member A may be placed in position by, first, turningthe cross bars K so that they will pass inward between the sides F and Fand then turning each of these cross bars at right angles to engage thesame with the aligned apertures G. The screws J may then be turned toforce the cross bars K in an outward direction with the reaction thatthe member A is pressed against the glass bar D and gaskets O and 0', soas to form a liquid-tight seal. The glass D is located on the left ofthe center my improved construcin assembly by the clips P engaging inapertures H.

In the general statement of object it was mentioned that the overhangingsides of the glass cover tended to be bent over with the pull.

This tendency increases as the pull is exerted farther away from thesupporting glass.

This stress is exerted in conventional gauges by round section bolts,hence the bolt center line is necessarily at some distance from thesolid glass and gasket supporting edge (Fig. 7; U).

But if high strength steel is used, if a long narrow side section besubstituted for bolt, if the narrow side be positioned parallel to theglass, it becomes possible to bring the center line of stress close inagainst the edge of glass.

Hence the fabricated cover secures the minimum overhang, least eccentricload, least distortion and, consequently, minimum glass breakage.

What I claim as my invention is:

1. In a liquid level gauge a member having apertures in the oppositeends thereof and a channel in one face thereof extending to connect withsaid apertures, a transparent plate covering said channel, a U-shapedframe member embracing said transparent plate and channel member, saidframe including a slotted front plate and side plates extending in rearof the channel member and provided with series of apertures in theopposite sides of the rearwardly extending portion, a series of screwseach swiveled to the rear face of said channel member, an oblong platethreadedly engaging each screw adapted when turned in one direction topass between the sides of said frame and when turned transversely toengage opposite apertures in said sides and to transmit clamping stressfrom said screws to said frame.

2. A liquid level gauge comprising a member formed of cold rolled barstock having threaded apertures formed in its opposite ends and achannel in one face thereof extended to connect with said apertures, amember including a front plate having a longitudinally extending slottherein and a pair of spaced parallel plates arranged on opposite sidesof said slot and welded to said front plate to extend at right anglesthereto and adapted to embrace said channel member, said parallel platesbeing provided with series of apertures therein adjacent to the outeredge portions thereof and all of said plates being formed of cold rolledstock requiring no machining of any of the surfaces thereof, atransparent panel extending between said parallel plates and said frontplate and channel member to cover the channel of the latter, sealingmeans between said transparent panel and channel member, a plurality ofclamping screws each having a swivel engagement with said bar member andarranged in registration with aligned pairs of apertures in saidparallel plates, and cross bars threadedly engaging said screws adaptedwhen turned in one direction to pass between said parallel plates andwhen turned at right angles thereto to engage aligned pairs of aperturesin said parallel plates.

3. A liquid level gauge comprising a member formed of cold rolled barstock having threaded apertures formed in its opposite ends and achannel in one face thereof extended to connect with said apertures, amember including a front plate having a longitudinally extending slottherein and a pair of spaced parallel plates arranged on opposite sidesof said slot and welded to said front plate to extend at right anglesthereto and adapted to embrace saidchannel member, said parallel platesbeing provided with series of apertures therein adjacent to the outeredge portions thereof and all of said plates being formed of cold rolledstock requiring no machining of any of the surfaces thereof, atransparent panel extending between said parallel plates and said frontplate and channel member to [cover the channel of the latter, sealingmeans between said transparent panel and channel member, a plurality ofclamping screws each having a groove near its inner end, a sheet metalstamping for each screw slotted to receive the groove portion thereofand welded to the rear face of said bar member, said stampings beinglocated to register said screws respectively with aligned pairs ofapertures in said parallel plates, and a cross bar threadedly engagingeach screw adapted when turned in one direction to pass between saidparallel plates, said cross bars having arcuate end portions permittingthe turn of the same into engagement with aligned pairs of slots to formabutments for the clamping screws.

HOWARD D. YODER.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 181,269 Keese et al Aug. 22, 18761,181,139 Huntress May 2, 1916 1,227,196 Pocock May 22, 1917 FOREIGNPATENTS Number Country Date 397,931 France May 21, 1909 680,229 FranceJan. 17, 1930 809,096 France Dec. 3, 1936

